Relaxation and Conductivity in P3HT/PC71BM Blends As Revealed by Dielectric Spectroscopy

Jing Cui, Daniel E. Martinez-Tong, Alejandro Sanz, Tiberio A. Ezquerra, Esther Rebollar, Aurora Nogales

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

The conduction mechanism and the molecular dynamics on the paradigmatic bulk heterojunction formed by poly(3-hexylthiophene) (P3HT) and phenyl-C-71-butyric acid methyl ester (PC71BM) blends have been characterized by dielectric spectroscopy. The results show that hexyl lateral chains of the polymer exhibit a high frequency local motion, similar to a polyethylene-like relaxation. By dielectric spectroscopy the dependence with temperature of the conductivity has also been studied. The results in the low temperature region provide a method to estimate the energy offsets of the system due to the presence of the C-71 derivative. In the high temperature region, the temperature dependence of the conductivity can be described by the Gaussian disorder model, and we have observed that the energetic disorder in this region does not depend upon the content of PC71BM in the blends.
OriginalsprogEngelsk
TidsskriftMacromolecules
Vol/bind49
Udgave nummer7
Sider (fra-til)2709-2717
Antal sider9
ISSN0024-9297
DOI
StatusUdgivet - 12 apr. 2016

Citer dette

Cui, J., Martinez-Tong, D. E., Sanz, A., Ezquerra, T. A., Rebollar, E., & Nogales, A. (2016). Relaxation and Conductivity in P3HT/PC71BM Blends As Revealed by Dielectric Spectroscopy. Macromolecules, 49(7), 2709-2717. https://doi.org/10.1021/acs.macromol.5b02727
Cui, Jing ; Martinez-Tong, Daniel E. ; Sanz, Alejandro ; Ezquerra, Tiberio A. ; Rebollar, Esther ; Nogales, Aurora. / Relaxation and Conductivity in P3HT/PC71BM Blends As Revealed by Dielectric Spectroscopy. I: Macromolecules. 2016 ; Bind 49, Nr. 7. s. 2709-2717.
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title = "Relaxation and Conductivity in P3HT/PC71BM Blends As Revealed by Dielectric Spectroscopy",
abstract = "The conduction mechanism and the molecular dynamics on the paradigmatic bulk heterojunction formed by poly(3-hexylthiophene) (P3HT) and phenyl-C-71-butyric acid methyl ester (PC71BM) blends have been characterized by dielectric spectroscopy. The results show that hexyl lateral chains of the polymer exhibit a high frequency local motion, similar to a polyethylene-like relaxation. By dielectric spectroscopy the dependence with temperature of the conductivity has also been studied. The results in the low temperature region provide a method to estimate the energy offsets of the system due to the presence of the C-71 derivative. In the high temperature region, the temperature dependence of the conductivity can be described by the Gaussian disorder model, and we have observed that the energetic disorder in this region does not depend upon the content of PC71BM in the blends.",
author = "Jing Cui and Martinez-Tong, {Daniel E.} and Alejandro Sanz and Ezquerra, {Tiberio A.} and Esther Rebollar and Aurora Nogales",
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Cui, J, Martinez-Tong, DE, Sanz, A, Ezquerra, TA, Rebollar, E & Nogales, A 2016, 'Relaxation and Conductivity in P3HT/PC71BM Blends As Revealed by Dielectric Spectroscopy', Macromolecules, bind 49, nr. 7, s. 2709-2717. https://doi.org/10.1021/acs.macromol.5b02727

Relaxation and Conductivity in P3HT/PC71BM Blends As Revealed by Dielectric Spectroscopy. / Cui, Jing; Martinez-Tong, Daniel E.; Sanz, Alejandro; Ezquerra, Tiberio A.; Rebollar, Esther; Nogales, Aurora.

I: Macromolecules, Bind 49, Nr. 7, 12.04.2016, s. 2709-2717.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Relaxation and Conductivity in P3HT/PC71BM Blends As Revealed by Dielectric Spectroscopy

AU - Cui, Jing

AU - Martinez-Tong, Daniel E.

AU - Sanz, Alejandro

AU - Ezquerra, Tiberio A.

AU - Rebollar, Esther

AU - Nogales, Aurora

PY - 2016/4/12

Y1 - 2016/4/12

N2 - The conduction mechanism and the molecular dynamics on the paradigmatic bulk heterojunction formed by poly(3-hexylthiophene) (P3HT) and phenyl-C-71-butyric acid methyl ester (PC71BM) blends have been characterized by dielectric spectroscopy. The results show that hexyl lateral chains of the polymer exhibit a high frequency local motion, similar to a polyethylene-like relaxation. By dielectric spectroscopy the dependence with temperature of the conductivity has also been studied. The results in the low temperature region provide a method to estimate the energy offsets of the system due to the presence of the C-71 derivative. In the high temperature region, the temperature dependence of the conductivity can be described by the Gaussian disorder model, and we have observed that the energetic disorder in this region does not depend upon the content of PC71BM in the blends.

AB - The conduction mechanism and the molecular dynamics on the paradigmatic bulk heterojunction formed by poly(3-hexylthiophene) (P3HT) and phenyl-C-71-butyric acid methyl ester (PC71BM) blends have been characterized by dielectric spectroscopy. The results show that hexyl lateral chains of the polymer exhibit a high frequency local motion, similar to a polyethylene-like relaxation. By dielectric spectroscopy the dependence with temperature of the conductivity has also been studied. The results in the low temperature region provide a method to estimate the energy offsets of the system due to the presence of the C-71 derivative. In the high temperature region, the temperature dependence of the conductivity can be described by the Gaussian disorder model, and we have observed that the energetic disorder in this region does not depend upon the content of PC71BM in the blends.

U2 - 10.1021/acs.macromol.5b02727

DO - 10.1021/acs.macromol.5b02727

M3 - Journal article

VL - 49

SP - 2709

EP - 2717

JO - Macromolecules

JF - Macromolecules

SN - 0024-9297

IS - 7

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